Low profile, high stretch knit prosthetic device

a prosthetic device and high stretch technology, applied in knitting, medical science, textiles and papermaking, etc., can solve the problems of complicated complicated placement of the stent-graft on the stent and the implantation of the stent-graft itself, and inability to achieve macroporous textile structure as a gra

Inactive Publication Date: 2003-02-06
LIFESHIELD SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Grafts which cannot easily accommodate the longitudinal and/or radial dimensional changes from a unexpanded or collapsed state to an expanded stent often complicate the implantation of the stent-graft.
The unfolding of the graft, however, often complicates the placement of the graft on the stent and the implantation of the stent-graft itself.
A macroporous textile structure is not desirable as a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Low profile, high stretch knit prosthetic device
  • Low profile, high stretch knit prosthetic device
  • Low profile, high stretch knit prosthetic device

Examples

Experimental program
Comparison scheme
Effect test

example 1

Single Layer Knit Tubular Graft With a Two-Step Atlas Movement

[0076] The following specifications are used to fabricate a solid knitted prosthesis of the present invention.

[0077] Yarn Type: Texturized polyethylene terephthalate (PET), 40 denier, 27 filaments.

[0078] Number of Guide Bars: Six.

[0079] Guide Bar Threading Details: (y--Threaded / n--Not Threaded)

[0080] Guide Bar No. 1: y / y / y / y / y / y / y / y / y / y / n / n

[0081] Guide Bar No. 2: n / n / n / n / n / n / n / n / n / n / y / n

[0082] Guide Bar No. 3: y / n / n / n / n / n / n / n / n / n / n

[0083] Guide Bar No. 4: n / n / n / n / n / n / n / n / n / n / n / y

[0084] Guide Bar No. 5: y / n / n / n / n / n / n / n / n / n / n / n

[0085] Guide Bar No. 6: y / y / y / y / y / y / y / y / y / y / n / n

[0086] Guide Bar Position Details:

[0087] Guide Bar No. 1: 4-6 / 4-4 / 4-2 / 2-2 / 2-0 / 2-2 / 2-4 / 4-4 / 1 (repeat once)

[0088] Guide Bar No.2: 2-4 / 2-2 / 2-2 / 2-0 / 0-2 / 0-0 / 0-0 / 0-2 / (repeat once)

[0089] Guide Bar No. 3: 2-2 / 2-0 / 2-4 / 4-4 / 4-4 / 4-2 / 4-2 / 2-2 / (repeat once)

[0090] Guide Bar No. 4: 0-0 / 0-0 / 2-0 / 2-2 / 2-2 / 2-2 / 4-2 / 0-0 / 0 / (repeat once)

[0091] Guide Bar No. 5: 4-2 / 4-4 / 4-4 / 4-2 / 2-0 / 2-2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

A radially expandable stent-graft endoprosthesis is provided. The graft included in the stent-graft is a knitted tubular structure circumferentially disposed and securably attached to the stent. The knitted tubular structure has a knit pattern of interlacing yarns in an Atlas or a modified-Atlas pattern to provide greater than 150 percent longitudinal stretchability. A knitted tubular graft and a knitted medical fabric with greater than 150 percent longitudinal stretchability are also provided.

Description

[0001] The present invention relates generally to a tubular implantable prosthesis having a knitted textile structure. More particularly, the present invention relates to an endoprosthesis with a knitted textile structure having increased longitudinal stretchability.BACKGROUND OF RELATED TECHNOLOGY[0002] An intraluminal prosthesis is a medical device used in the treatment of diseased blood vessels. An intraluminal prosthesis is typically used to repair, replace, or otherwise correct a diseased or damaged blood vessel. An artery or vein may be diseased in a variety of different ways. The prosthesis may therefore be used to prevent or treat a wide variety of defects such as stenosis of the vessel, thrombosis, occlusion or an aneurysm.[0003] One type of intraluminal prosthesis used in the repair of diseases in various body vessels is a stent. A stent is a generally longitudinal tubular device formed of biocompatible material which is useful to open and support various lumens in the bod...

Claims

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Application Information

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IPC IPC(8): A61F2/06A61F2/84D04B21/14
CPCA61F2/07A61F2002/075D04B21/14D10B2509/06A61F2/88A61F2/90A61F2220/0091
Inventor DONG, JERRY Q.
Owner LIFESHIELD SCI
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